package cn.itcast.bos.service.base.impl;

import java.util.List;
import java.util.Set;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import cn.itcast.bos.dao.base.CourierDao;
import cn.itcast.bos.domain.base.Courier;
import cn.itcast.bos.service.base.CourierService;
@Service
public class CourierServiceImpl implements CourierService {
	//注入Dao层
	@Autowired
	private CourierDao cd;
	@Transactional
	@Override
	@RequiresPermissions("courier_save")
	public void save(Courier courier) {
		cd.save(courier);
	}
	@Override
	
	public Page<Courier> findPageData(Specification<Courier> sf, Pageable pageable) {
		return cd.findAll(sf,pageable);
	}
	@Override
	public List<Courier> findnoassociation() {
		Specification<Courier> sf = new Specification<Courier>() {
			
			@Override
			public Predicate toPredicate(Root<Courier> root, CriteriaQuery<?> query,
					CriteriaBuilder cb) {
				Predicate p = cb.isEmpty(root.get("fixedAreas").as(Set.class));
				return p;
			}
		};
		return cd.findAll(sf);
	}

}
